Meson-Exchange Currents and the Strangeness Radius of 4he

Abstract

Meson-exchange current contributions to the strangeness radius of ${}^4$He are computed in the one-boson exchange approximation. It is found that these contributions introduce a $\lapp$10\% correction to the one-body contribution. They should not, therefore, hamper the extraction of the nucleon strangeness radius from the parity-violating electron-${}^4$He asymmetry.

9 tex pages and 2 figures (not included, available from authors on request), CEBAF Preprint #TH-93-16 and MIT Preprint CTP#2234

References in corpus (2)

• Just How Strange? Loops, Poles and the Strangeness Radius of the Nucleon
• Non-Standard Physics and Nucleon Strangeness in Low-Energy PV Electron Scattering

Cited by in corpus (12)

• Intermediate-Energy Semileptonic Probes of the Hadronic Neutral Current
• Precision Measurements of the Nucleon Strange Form Factors at Q^2 ~0.1 GeV^2
• Parity-Violating Electron Scattering from 4He and the Strange Electric Form Factor of the Nucleon
• The SAMPLE Experiment and Weak Nucleon Structure
• Strangeness in the nucleon: neutrino-nucleon and polarized electron-nucleon scattering
• Many-Body Currents and the Strange-Quark Content of 4he
• Coherent $\mu -e$ Conversion at Next-to-Leading Order
• Strange Vector Form Factors from Parity-Violating Electron Scattering
• Nuclear Structure Uncertainties in Parity-Violating Electron Scattering from Carbon 12
• A STRANGE MESONIC TRANSITION FORM FACTOR
• Strange Mesonic Transition Form Factor in the Chiral Constituent Quark Model
• Parity Violation with Electrons and Hadrons